My recently purchased iMac auto updated to 10.14.6 now every time I cold boot and launch AC my licence is "not found", this then reconciles by my having to login with my GS ID and uploading the licence for repair. Anyone else having this issue?

I updated High Sierra yesterday, and every time I do that I get the same message.
Upload and repair key then I wait and wait and wait for it to download again. Give up waiting and force quit and try again. Usually, the second time works.
As for drivers, I assume the latest drivers were installed with 23 so that didn't fix this. Apple problem or Graphisoft?

I last installed CmRuntimeUser_6.90.3691.500.dmg at the beginning of this month. I still had to fix the licence, but only once. The fix can be sloooow. Not sure if the recently released AC23 has over written that installation but everything seems to be ok at this end including starting AC after a cold boot.